Said schilling



(No Model.) 2Sheets-Sheet 1. C. SGHRAUBSTADTER, Jr. & O. R. SGHILLING. CASTING BOX.

No. 465,541. Patented Dec. 22, 1891.

(No Model.) 2 Sheets-Sheet 2.

C. SGHRAUBSTAD-TER, Jr. & G. R. SCHILLING.

CASTING BOX.

No. 465.541. Patented Des. 22, 1891-.

The box is further held in its horizontal poout in the claims.

cially the slides or bars of the locking device.

. frame 1, and to the shaft is secured a lever UNITED STATES PATENT OFFICE.

CARL- SCHRAUBSTADTER, JR, AND CHARLES R. SOHILLING, OF ST. LOUIS, MISSOURI; SAID SOIIILLING ASSIGNOR TO SAID SCHRAUBSTADTER, J R.

CASTING-BOX.

SPECIFICATION forming part of Letters Patent No. 465,541, dated December, 22, 1891.

Application filed February 12, 1891.

.To all whom it may concern:

Be it known that we, CARL SCHRAUBSTAD- 'rER, J 1:, and CHARLES R. SGHILLING, both of the cityof St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Casting-Boxes, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

Our invention relates to certain improvements in boxes for making stereotype-casts; and our invention consists in features of novelty hereinafter fully described, and pointed Figure I is a perspective view of the box, showing it open ready to receive the matrix. Fig. II is a side view of the box, showing it. closed. Fig. III is a side view of the box, showing it in its uprightor vertical position ready for casting. Fig. IV is a detail sectional View of part of the left-hand clamping device on the line IV IV, Fig. V, looking rearward. Fig. V is a detail side view of part of the left-hand clamping device. Fig. VI is a detail perspective view of part of the righthand clamping device. Fig; VII is an enlarged detail perspective View showing more espe- Fig. VIII is an enlarged detail partly side and partly sectional view of the said locking device and adjunctive parts. 7

Referring to the drawings, 1 represents a frame having front standards 2 and rear standards 3. The upper ends of the standards 2 are notched out to receive the journals 4, formed upon or secured to the lower half 5 of the casting-box. \Vhen in its horizontal position, the box is supported by the journals 4 at the center, and at the front ends by means of an arm 6, projecting upwardly from a tierod 7, which serves to hold the frame together.

sition by arms 8, engaging its inner end, as shown clearly at 9, Fig. II, the arms being secured to a rock-shaft 10, ournaled 1n the 11, having a handle 12, by which the shaft may be rocked to move the arms 8 out of engagement with the box. By an upward movement on the outer end of the lever 11 the arms Serial No. 381,220. (No model.)

8 would be disengaged from the box, which will or can then assume the vertical position shown in Fig. III, and the box is prevented from swinging beyond a vertical position by its lower end coming against a projection 13 on the tie-rod 7.

The upper half 5 of the casting-box is pivoted to the lower half 5 by means of a rod 14,

passing through perforated lugs 15 in the part 5 of the box and through slotted lugs 16 on the part 5 of the box.

ers l7,'and consequently a variation in the thicknesses of the casts.

On the upper half 5 of the box are projec-T jtions 18, having inclined notches or grooves 19 upon their inner faces, as shown clearly in ,Fig. I and by dotted lines in Figs. II and III. 011 the lower half of the box are sliding plates 20 20, carrying projections 21, which are preferably in the form of rollers. The sliding plates are held in position by suitable guides in Fig. VI; but 26 represents the perforation iuthe link for receiving the pivot-pin of the missing plate. On the links 25 are projections 27, preferablyin the form of rollers.

These projections 27 fit in grooves 28 on the inner faces of projections 29, formed upon or secured to the standards 2. The covers or guides 22 and 22 simply keep the bars or slides in their proper positions. Vere it not for the projection or roller 27 engaging in the track or groove 28 they would be free to move forward and backward as far as the rollers or projections 21 would allow them. The grooves 28 are eccentric to the journals 4, their inner ends being nearer the journals than their outer ends. zontal to a vertical position, the projections 27 move in the grooves 28 and force the sliding plates 20 20, with their projections 21, toward the outer end of the box, thus causing the projeotions 21to engage the notches or grooves 19 in the projections 18, and thus firmly hold- As the box is swung from a hori- This form of hinger between the two parts of'the box admitsof' variation in the thickness of the mold orbearing the part- 5 of the box against the part 5 of the box, any deviation of the link 25 from its normal positionthat shown in FigVIII- being resisted by the spring 31, which is a part of the lug 30, rigidly attached to the link, and as the box is swung to a horizontal position again the plates, with their projections, aremovedin the opposite direction, which causes the projections to be disengaged from the notches or grooves 19, and permitting the part 5 of the box to be swung free of the part 5 of the box. Thus each time the box is moved into the vertical position (shown in Fig. III) the two parts are automatically con-- nected together, and as it moves to its horizontal position (shown in Fig. II) the two parts are disconnected, so that the upper art may be raised to open the box, as shown in Fig. I. Were the track or groove 28 made with the center of the trunnion at its center the relative positionof the roller 27 to the trunnion 4 would remain the same when the box was tilted from its vertical position in Fig. II to the upright position in Fig. III. As will be seen by the drawings, this is not the case; but the track or groove 28 is eccentric, so that when the box is swung into the position shown in Fig. III the roller is brought upward or toward the handle 17. This of course pushes the entire slides or bars forward in the same direction, so that the projections or rollers 21 push forward against the notches or grooves 19 in the projections 18. The faces of these projections are made slanting, so that when therollers push forward they tend to force the two halves of the box together.

By making the sliding plates 20 20 on each side of the machine in two parts and conneeting them by the link 25 a slight variation inthe thickness of the matter between the two parts of the box is compensated for, as one of the sliding'plates may be moved slightly farther than the other plate by the turning of the link at its pivot-pointswith theplat'es, and this also permits of an equal pressure in the clamping of the box at both ends. hen the connecting -link is used, either plate is liable to be pushed forward by the looseness of itsconnection more than the other, which might cause one or the other of them not to be moved sufficiently far to disengage its projection 21 from the groove or notch 19. To obviate this we provide the" link 25 with a projectinglug. 30, which moves and [its in the recess 32 of the guide 22, preventing too much movement on the part of either one of the plates and insuring the proper position of the projections 21, and as a further aid to this we prefer to have this lug end in a piece of spring metal 31, fitting in a groove 32 in the guide 22, so that when pressure is brought against it it will spring and allow of considerable variation.

It is evident that if in place of being made in two pieces the bars or slides 20 20 were of one, in case any small imperfection in the bearers or any foreign substance came bewith its corresponding notch in the projection 18, bringing the pressure against this, while a projection or roller at the other end would not touch the slide, leaving this end of the box unclamped. In our construction, when such is the ease, the roller on one end pushes against the projection, and as soon as there is sufficient pressurethe slide is pushed back against the link 25, which in turn pushes or pulls forward the other half of the slide, bringing it against its projection 18, and thus equalizing the pressure.

The guides 22 and 22 prevent any motion, except it is parallel with the plates and casting-surface of the box. In other words, these plates are simplylaid on the sides of the box.

The guides or covers 22 and 22 extend over them and are held in position by bolts, as

shown in Figs. I and II, so that they shallnot The roll;

move except in the right direction. ers 21 and 27 prevent the bars from moving out of their proper position, though of course 27 is the principal guide, and it is assisted somewhat by the projection 30 and 31.

In order to give a strong and positive pressure when various thicknesses of molds or gages 17 are used, we prefer to employ sliding or adjustable boxes 33, held byscrews 31 against the journals at, which permit the journals to move relatively to the point of bearing between the projections 27 and the lugs 29 and leave a space, as shown at 35, Fig. III.

hen the box is lowered in a casting position, as in Fig. III, the roller 27 is moving in the eccentric. Track 28 pushes the slides forward, so that the rollers 21 bear against the inclined planes in the projections 18. This brings the two halves of the box together. If, as we contemplateihthe slides are so set as to continue pushing forward after the surfacesare brought together, the roller 27 will be forced down the track 28 and at the same time lift the trunnions 4 in the sliding boxes, the weight of the box being borne by the rollers 27 instead of the trunnions, as illustrated in Fig. III. Should it be desirable to employ more pressure than the weight of the box supplies, the set-screws 34: can be screwed down, so that when the trunnion 4 rises it will press against the sliding box 33.

This will prevent the trunnion from rising any farther, and the additional pressure-supplied by forcing the box into an upright or casting position will tend to bring the trunnion 4 and the roller 27 closer together, and

consequently will give more pressure against the slides, and the rollers 21, which slide in the tracks 19 of the projections 18, and the box will in consequence be more firmly clamped together.

The upper half of the box is provided with.

handles 36, by which it may be raised to open the box, and to more easily accomplish the opening of the box we employ a counterweight 37, connected by a chain 38 to the upper half of the box, the chain passing over a grooved pulley 39, journaled in a tie-rod 40, which holds the upper ends of the standards 3 together.

To prevent the counterbalance-weight,

through the chain 88, pulling the upper half of the box too far over, we connect the weight by means of a chain or chains 41 to the rod 40, so that when the weight has lifted the upper half of the box a sufficient distance the chains 41 will become taut and will sustain the weight 37, as shown in Fig. I, thus removing its pressure from the upper part of the box and preventing it from moving the upper part of the box too far.

The operation of the machine is as follows: The upper part 5 of the box is first opened, as shown in Fig. I, and the matrix from which a cast is to be made is placed in the mold or gage 17. The upper half of the box is then lowered and the arms 8 are moved out of engagement with the inner end of the box, which will or can then swing to the vertical position, (shown in Fig. 1H,) and as it swings to this position the two parts of the box are united by the sliding plates 20 20 and the projections 21, engaging the notched projections 18, as described. The cast is then made by pouring metal into the space between the two parts of the box, and the box is then brought to a horizontal position again, as shown in Fig. II, when the upper half of the box may be raised, as shown in Fig. I, permitting the cast to be removed and another matrix to be inserted.

\Ve claim as our invention- 1. In a two-part casting-box, the combination of the notched projections on one of the I the box, linked together at their meeting ends to stand in parallel planes one above the other, and said plates having roller projections for engaging said notched projections, the guides, and means for automatically shifting the plates, substantially as and for the purpose set forth.

3. In a two part casting-box, the combina tion of the notched projections on the upper half of the box, sliding plates on the lower half of the box, having rollers for engaging the notched projections, a projection 29 on the standards 2, having an eccentric groove, the links 25, and a projection on one of said links fitting in said groove, whereby the two parts of the box are automatically locked and unlocked, substantially as set forth.

4. In a casting-box, the combination of the upperand lowerpartshingedtogether,notched projections on the upper part, sliding plates on the lower part, rollers on the sliding plates for engaging the notched projections on the upper part,links connecting the sliding plates, rollers on the links, and projections 011 the .standard of the machine, having eccentric grooves in which the rollers on the links fit, substantially as and for the purpose set forth.

5. In a casting-box, thecombination of the members 5 and 5, the member 5 having notched projections 18 and the member 5 having sliding plates 20 20 provided with rollers 21, a link connecting the plates 20 20, a roller on the link engaging a groove in the projection 29 on the standard of the machine, and a lug 30 on the connecting-link, and a guide 22, having the recess 32 to receive the lug 30, substantially as and for the purpose set forth.

6. In a casting-box, the combination of the part 5, having the notched projections 18, the part 5, having the sliding plates 20 20, with rollers 21 adapted to engage the projections 18, guides 22 22, having grooves 32 and recesses 32, in which the plates 20 20 move, and links 25, having lugs 30 and spring extensions 31, and means for actuating said plates, substantially as and for the purpose set forth.

7. In a castingbox, the combination of the members 5 and 5, the member 5 having notched projections 18, sliding plates 20 20, having projections 21, links 25, having projections 27, the grooved projection 29, the journals 4 on the lower half of the box, and the set-screws 34., substantially as and for the purpose set forth.

8. In combination with a casting-box made in two parts, adapted to be opened out, and a counter-balance37, connected to the upper part of the box by a chain 38 and connected to the upper part of the frame of the machine by a chain a l, substantially as and for the purpose set forth.

CARL SCHRAUBSTADTER, JR. CHARLES R. SOHILLING.

In presence of E. S. KNIGHT, THOS. KNIGHT. 

